| Osuga River | |
|---|---|
| Origin | Valdai Hills |
| Mouth | Tvertsa River |
| Basin countries | Russia |
| Length | 167 km |
| Source elevation | |
| Avg. discharge | 17.9 m³/s |
| Basin area | 241 km² |
Osuga River (Russian: река́ Осу́га) is a river in Tver Oblast of Russia. It flows out of the Valdai Hills and follows into the Tvertsa River.
The towns located along the river include: Kuvshinovo.